MESON Chess Problem Database
Problem Display
PID: 109620 (8/b6B/6r1/p5p1/N1p5/Q1pr1p2/1NkP1R2/4RK2 w - - 0 1)
Viesturs, Nikolai
Latvian Championship, 1950
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxd2
- 2.Bxg6#
- 2.Qxc3#
- 1...Re3
- 2.dxe3#
- 1...Rd4
- 2.Qxc3#
- 2.d3#
- 1...Rd5
- 2.Qxc3#
- 2.d4#
- 1...Rdd6
- 2.Qxc3#
- 2.d4#
- 1...Rd7
- 2.Qxc3#
- 2.d4#
- 1...Rd8
- 2.Qxc3#
- 2.d4#
- 1...Ra6
- 2.Qxc3#
- 1...Rb6
- 2.Qxc3#
- 2.dxc3#
- 1...Rc6
- 2.Qxc3#
- 1...Rgd6
- 2.Qxc3#
- 1...Re6
- 2.Qxc3#
- 1...Rf6
- 2.Qxc3#
- 1...Rh6
- 2.Qxc3#
- 1...Rg7
- 2.Qxc3#
- 1...Rg8
- 2.Qxc3#
- 1...cxb2
- 2.Qxb2#
- 1...Rxd2
- Tries
- 1.Sxd3?
- threat
- 2.Qxc3#
- 1...Kxd3
- 2.Qxc3#
- 1...cxd2
- 2.Rc1#
- 2.Qc3#
- 1...Bd4!
- threat
- 1.Sxc4?
- threat
- 2.Rc1#
- 2.Qa2#
- 1...Rxd2
- 2.Bxg6#
- 2.Qxc3#
- 1...Rd4
- 2.Qxc3#
- 1...Rd5
- 2.Qxc3#
- 1...Rdd6
- 2.Qxc3#
- 1...Rd7
- 2.Qxc3#
- 1...Rd8
- 2.Qxc3#
- 1...Rb6
- 2.Se3#
- 2.Rc1#
- 2.Qxc3#
- 2.dxc3#
- 1...Re3!
- threat
- 1.Bxg6?
- threat
- 2.Qxc3#
- 1...cxb2
- 2.Qxb2#
- 2.Qc3#
- 1...cxd2
- 2.Qc3#
- 1...Bd4!
- threat
- 1.dxc3+?
- 1...Rd2
- 2.Bxg6#
- 1...Bxf2!
- 1...Rd2
- 1.Sxd3?
- Keys
- 1.Qa2!
- threat
- 2.Sxc4#
- 1...Rxd2
- 2.Bxg6#
- 1...cxb2
- 2.Qxb2#
- 1...Re3
- 2.dxe3#
- 1...Rd4
- 2.d3#
- 1...Rd5
- 2.d4#
- 1...Rdd6
- 2.d4#
- 1...Rd7
- 2.d4#
- 1...Rd8
- 2.d4#
- 1...Rb6
- 2.dxc3#
- threat
- 1.Qa2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 8
- Sets
- R(c);OGATE,P_SPINR(h)::R(E)+P(D),XR(c)
- R(h);P_SPINR(c)::QAR1(F),XP(b)
- P(b);OGATE,XS(C)::QAR1(F),XP(b)
- Tries
- Try
- S(C);XR(c)
- Threat
- QAR1(F),XP(b)
- Vars
- K(a);P_SPINP(b),P_SPINR(h),S_FLIGHT,XS(C)::QAR1(F),XP(b)
- Refutation
- B(i);
- Try
- S(C);XP(e)
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,P_SPINR(h)::QAR1(F),XP(b)
- Refutation
- R(c);P_SPINR(h)
- Try
- B(H);P_PINR(c),XR(h)
- Threat
- QAR1(F),XP(b)
- Vars
- P(b);P_SPINP(b),XP(D)::QAR1(F)
- Refutation
- B(i);
- Try
- P(D);CHECK,XP(b)
- Vars
- R(c);P_SPINR(c),S_CUTB(i)::B(H),XR(h)
- Refutation
- B(i);XR(E)
- Try
- Actual
- Q(F);
- Threat
- QAR(F)+S(C),XP(e)
- Vars
- R(c);OGATEB,P_SPINR(c),XP(D)::B(H),XR(h)
- P(b);OGATE,P_SPINP(b),XS(C)::QAR1(F),XP(b)
- R(c);OGATE,P_SPINR(h)::R(E)+P(D),XR(c)
- R(c);OGATE,P_SPINR(h)::R(E)+P(D)
- R(h);P_SPINR(c),S_CUTB(i)::R(E)+P(D),XP(b)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).